Package pygeodesy :: Module albers |
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# Module albers

Albers Equal-Area projections.

Classes AlbersEqualArea, AlbersEqualArea2, AlbersEqualArea4, AlbersEqualAreaCylindrical, AlbersEqualAreaNorth, AlbersEqualAreaSouth and AlbersError, transcoded from Charles Karney's C++ class AlbersEqualArea.

See also Albers Equal-Area Conic Projection in John P. Snyder, "Map Projections -- A Working Manual", 1987, pp 98-106 and the Albers Conical Equal-Area examples on pp 291-294.

Version: 22.09.12

Classes
| AlbersError An AlbersEqualArea, AlbersEqualArea2, AlbersEqualArea4, AlbersEqualAreaCylindrical, AlbersEqualAreaNorth, AlbersEqualAreaSouth or Albers7Tuple issue.
| _AlbersBase (INTERNAL) Base class for `AlbersEqualArea...` projections.
| AlbersEqualArea An Albers equal-area (authalic) projection with a single standard parallel.
| AlbersEqualArea2 An Albers equal-area (authalic) projection with two standard parallels.
| AlbersEqualArea4 An Albers equal-area (authalic) projection specified by the `sin` and `cos` of both standard parallels.
| AlbersEqualAreaCylindrical An AlbersEqualArea projection at `lat=0` and `k0=1` degenerating to the cylindrical-equal-area projection.
| AlbersEqualAreaNorth An azimuthal AlbersEqualArea projection at `lat=90` and `k0=1` degenerating to the azimuthal LambertEqualArea projection.
| AlbersEqualAreaSouth An azimuthal AlbersEqualArea projection at `lat=-90` and `k0=1` degenerating to the azimuthal LambertEqualArea projection.
| Albers7Tuple 7-Tuple `(x, y, lat, lon, gamma, scale, datum)`, in `meter`, `meter`, `degrees90`, `degrees180`, `degrees360`, `scalar` and `Datum` where `(x, y)` is the projected, `(lat, lon)` the geodetic location, `gamma` the meridian convergence at point, the bearing of the y-axis measured clockwise from true North and `scale` is the azimuthal scale of the projection at point.

Variables
| __all__ = `_ALL_LAZY.albers`